Related
Can I safely downgrade from 4.4.2 to Stock 4.1.1 if I am still on the MG2 bootloader? I know that 4.3 OTA makes this impossible, but I don't THINK I did the OTA. I believe MG2 is the bootloader from the 4.1.2 days. Can anyone confirm?
gdselzer said:
Can I safely downgrade from 4.4.2 to Stock 4.1.1 if I am still on the MG2 bootloader? I know that 4.3 OTA makes this impossible, but I don't THINK I did the OTA. I believe MG2 is the bootloader from the 4.1.2 days. Can anyone confirm?
Click to expand...
Click to collapse
Get terminal emulator and type in:
Code:
su
getprop ro.bootloader
That will tell you which bootloaders you have.
Anything over 4.1.2 isn't safe to downgrade from.
It says:
Code:
I747UCDMG2
How does that translate to versions? Is that 4.1.2? Over? Under?
BWolf56 said:
Get terminal emulator and type in:
Code:
su
getprop ro.bootloader
That will tell you which bootloaders you have.
Anything over 4.1.2 isn't safe to downgrade from.
Click to expand...
Click to collapse
gdselzer said:
It says:
Code:
I747UCDMG2
How does that translate to versions? Is that 4.1.2? Over? Under?
Click to expand...
Click to collapse
Search is fun It's 4.1.2.
You can downgrade to 4.1.1 from it. I'm assuming you're doing that to unlock? If so, you can upgrade your bootloaders afterward w/o losing the unlock (just a fyi).
Do you want to downgrade in order to sim unlock your phone? That's what I did with my Bell s3. Saved me $30.
Just a quick FYI, you shouldn't need to fully downgrade your firmware. Just flashing the 4.1.1 modem should suffice.
And since I know someone will ask, doing this will not work if you've updated to 4.3 or beyond.
In my own defense, I used the Google but was unable to find anything that definitively said one equals the other. It's nice to get the confirmation.
I am downloading 4.1.1 stock now. After some Odin fun, (and crossing of fingers), we'll see if it works. Thanks for the help.
BWolf56 said:
Search is fun It's 4.1.2.
You can downgrade to 4.1.1 from it. I'm assuming you're doing that to unlock? If so, you can upgrade your bootloaders afterward w/o losing the unlock (just a fyi).
Click to expand...
Click to collapse
Downgraded to 4.1.1 stock through Odin and...IT WORKED! One small hitch that was easy to overcome. When the Odin flash was done, the phone rebooted to a soft brick at the Samsung logo. Booted into Recovery, did a factory reset and cleared cache. That fixed it. So I have a pure 4.1.1 Stock system now.
Next question: once I'm done with the unlock process, I assume I root it, flash back to my old modem (MG2) and restore my old system? Also, is there any advantage of upgrading my modem to something newer? Or should I just stick with what has been working for the last 6 months?
gdselzer said:
Downgraded to 4.1.1 stock through Odin and...IT WORKED! One small hitch that was easy to overcome. When the Odin flash was done, the phone rebooted to a soft brick at the Samsung logo. Booted into Recovery, did a factory reset and cleared cache. That fixed it. So I have a pure 4.1.1 Stock system now.
Next question: once I'm done with the unlock process, I assume I root it, flash back to my old modem (MG2) and restore my old system? Also, is there any advantage of upgrading my modem to something newer? Or should I just stick with what has been working for the last 6 months?
Click to expand...
Click to collapse
If you upgrade your modem/baseband, you gotta upgrade your bootloaders as well. Now that you're unlocked, there's no real reason not to upgrade but it what you got works fine, you can stick with it as well.
Factory reset is indeed needed when using Odin (as you noticed). Also, you can restore your backup once you're back on the same baseband/bootloaders the backup was made on.
SO since I updated my bootloader a while ago I forgot which I was on, but now have a need to use this phone with a different SIM card at times. I am using C-Rom 4.4.2. I ran getprop ro.bootloader and I have I747UCUEMJ2.
Would the following process get me back to where I am right now, just unlocked?
1) Make a nandroid backup
2) Odin stock 4.1.1 UCDLK3 (download from http://forum.xda-developers.com/showthread.php?t=2387423)
3) Unlock using free method
4) Root the rom (assuming can towelroot be used)
5) Install new TWRP recovery with Goo Manager
6) Flash MJ2 bootloader (MJ2bootloader/MJBmodem from Enewman here http://www.androidfilehost.com/?fid=23269279319197286 assuming I would need to do this)
7) Restore nandroid
EzEddie said:
SO since I updated my bootloader a while ago I forgot which I was on, but now have a need to use this phone with a different SIM card at times. I am using C-Rom 4.4.2. I ran getprop ro.bootloader and I have I747UCUEMJ2.
Would the following process get me back to where I am right now, just unlocked?
1) Make a nandroid backup
2) Odin stock 4.1.1 UCDLK3 (download from http://forum.xda-developers.com/showthread.php?t=2387423)
3) Unlock using free method
4) Root the rom (assuming can towelroot be used)
5) Install new TWRP recovery with Goo Manager
6) Flash MJ2 bootloader (MJ2bootloader/MJBmodem from Enewman here http://www.androidfilehost.com/?fid=23269279319197286 assuming I would need to do this)
7) Restore nandroid
Click to expand...
Click to collapse
After unlocking, you can use Odon to install a pre-rooted 4.1.2 ROM from XDA and TWRP or Philz Touch from Odin (depending on which one you used to create your nandroid backup). Root isn't required if you use Odin to flash a custom recovery.
BWolf56 said:
Search is fun It's 4.1.2.
You can downgrade to 4.1.1 from it. I'm assuming you're doing that to unlock? If so, you can upgrade your bootloaders afterward w/o losing the unlock (just a fyi).
Click to expand...
Click to collapse
Would someone care to explain how to get the version of the bootloader from the terminator emulator ?!?
I have a Galaxy S3 on 4.4.2 and I need the same info as the OP.
My version is T999VVLDMF2
Thanks.
Alexpatrascu said:
Would someone care to explain how to get the version of the bootloader from the terminator emulator ?!?
I have a Galaxy S3 on 4.4.2 and I need the same info as the OP.
My version is T999VVLDMF2
Thanks.
Click to expand...
Click to collapse
type su , to give superuser permission. then type getprop ro.bootloader.
"all i can really do , is stay out of my own way and let the will of heaven be done"
mrrocketdog said:
type su , to give superuser permission. then type getprop ro.bootloader.
"all i can really do , is stay out of my own way and let the will of heaven be done"
Click to expand...
Click to collapse
I already did that, please read my post again and the original post from first page.
This forum is for the i747 which is the AT&T version of the s3. I think the t999 is the tmobile version. The info in this thread would relate to the att version.
The bootloader labeling for the att s3 and tmobile s3 are different.
audit13 said:
This forum is for the i747 which is the AT&T version of the s3. I think the t999 is the tmobile version. The info in this thread would relate to the att version.
The bootloader labeling for the att s3 and tmobile s3 are different.
Click to expand...
Click to collapse
I didn't know that.
But tell me, how did BWolf56 knew OP's bootloader is 4.1.2 ?!.........what did he mean by "Search is fun It's 4.1.2", here:
http://forum.xda-developers.com/showpost.php?p=54375873&postcount=4
I can only assume there is a way to tell which bootloader one has by looking at the bootloader number and running it through some kind of software
I'm assuming.....
Alexpatrascu said:
I didn't know that.
But tell me, how did BWolf56 knew OP's bootloader is 4.1.2 ?!.........what did he mean by "Search is fun It's 4.1.2", here:
http://forum.xda-developers.com/showpost.php?p=54375873&postcount=4
I can only assume there is a way to tell which bootloader one has by looking at the bootloader number and running it through some kind of software
I'm assuming.....
Click to expand...
Click to collapse
bootloader is mg2 which corresponds to android version 4.1.2. i think on the samsung website or maybe android website i saw a chart with which versions corresponds with which bootloaders. (although that might only roughly apply , as i was on NE4 but not running KK ).
search is fun. google is your friend. :thumbup:
"all i can really do , is stay out of my own way and let the will of heaven be done"
Alexpatrascu said:
Would someone care to explain how to get the version of the bootloader from the terminator emulator ?!?
I have a Galaxy S3 on 4.4.2 and I need the same info as the OP.
My version is T999VVLDMF2
Thanks.
Click to expand...
Click to collapse
You're in the wrong subforum but MF2 is 4.1.2 (yay for google). Which means, you should be safe to downgrade to 4.1.1 from it. That being said, I duno much about the T999V.
Also if you read back to my first reply to this thread, I gave the solution.
BWolf56 said:
You're in the wrong subforum but MF2 is 4.1.2 (yay for google). Which means, you should be safe to downgrade to 4.1.1 from it. That being said, I duno much about the T999V.
Also if you read back to my first reply to this thread, I gave the solution.
Click to expand...
Click to collapse
Thanks a lot for your time guys.
Been digging through old posts, im in same situation as OP was, but does anyone have a link for Stock 4.1.1? Root is non-issue. would rather not pay for sammobile.
Hello everyone,
I have searched the site for some ways to unlock my device. I am running liquidsmooth 4.4.4 and as far as I know there is no way to unlock customs Roms running 4.3/4.4, unless you go back to the original stock rom and use either AT&T or third party site unlock code. So, I called AT&T and they provided me with the unlock code and they told me the same thing, the unlock code will not work until you go back to the original factory stock rom!
So, I have been searching here for the right 4.3 stock rom and I found out many posts and I got confused which to use. I would highly appropriate it if any one can help me and direct me to the right source/process for 4.3 stock rom steps and installation so I won't brick my phone.
Thanks in advance
GueSs_me said:
Hello everyone,
I have searched the site for some ways to unlock my device. I am running liquidsmooth 4.4.4 and as far as I know there is no way to unlock customs Roms running 4.3/4.4, unless you go back to the original stock rom and use either AT&T or third party site unlock code. So, I called AT&T and they provided me with the unlock code and they told me the same thing, the unlock code will not work until you go back to the original factory stock rom!
So, I have been searching here for the right 4.3 stock rom and I found out many posts and I got confused which to use. I would highly appropriate it if any one can help me and direct me to the right source/process for 4.3 stock rom steps and installation so I won't brick my phone.
Thanks in advance
Click to expand...
Click to collapse
If your bootloaders are on 4.4, you can't downgrade them (or you'll brick!).
You can use Terminal Emulator to know which one you're on:
Code:
getprop ro.bootloader
Once you know which one you have, you can go ahead and grab its stock version.
http://forum.xda-developers.com/showthread.php?t=1968625
i think this thread provides stock downloads.
good luck.
err on the side of kindness
BWolf56 said:
If your bootloaders are on 4.4, you can't downgrade them (or you'll brick!).
You can use Terminal Emulator to know which one you're on:
Code:
getprop ro.bootloader
Once you know which one you have, you can go ahead and grab its stock version.
Click to expand...
Click to collapse
Thanks for the reply, I checked the bootloader as you said and I got ( I747UCDLK3 ). So, I am guessing that I am still on 4.3 because the last bootloader update was through this process:
http://forum.xda-developers.com/showthread.php?t=2387423
I tried to flash the stock file update4.3.zip on that thread using TWRP but it did not work.
Any idea?
Thanks again
mrrocketdog said:
http://forum.xda-developers.com/showthread.php?t=1968625
i think this thread provides stock downloads.
good luck.
err on the side of kindness
Click to expand...
Click to collapse
Thanks for your kind reply. Is there any different to choose between the download options. I know it says the first one is the newest one, I am downloading
http://forum.xda-developers.com/showthread.php?t=2496425
So I hope it is the right one!?
I already have the stock rom 4.3 from
http://forum.xda-developers.com/showthread.php?t=2387423
But as I said on the previous reply not sure why I can't flash the update43.zip through the recovery?
Best,,,,
GueSs_me said:
Thanks for the reply, I checked the bootloader as you said and I got ( I747UCDLK3 ). So, I am guessing that I am still on 4.3 because the last bootloader update was through this process:
http://forum.xda-developers.com/showthread.php?t=2387423
I tried to flash the stock file update4.3.zip on that thread using TWRP but it did not work.
Any idea?
Thanks again
Click to expand...
Click to collapse
LK3 is 4.1.1. I'm guessing the 4.3 bootloaders update didn't work at all.
Now that you know you have LK3, just grab the stock firmware and flash it. (backup first)
thanks @BWolf56.
:GOOD:
err on the side of kindness
BWolf56 said:
LK3 is 4.1.1. I'm guessing the 4.3 bootloaders update didn't work at all.
Now that you know you have LK3, just grab the stock firmware and flash it. (backup first)
Click to expand...
Click to collapse
This is really strange. So, if I may ask, how my bootloader is still 4.1.1 and I am able to flash 4.3/4.4 roms? Also, if I install I747UCDLK3 can I go back to 4.3 custom roms without updating the bootloader!!! because that what I did last time I follwed the steps in below web site to be able to flash 4.3 rom,,,,, but apparently I am still on 4.1.1 bootloader!!
http://forum.xda-developers.com/showthread.php?t=2387423
4.3 roms could still be flashed on older firmware. 4.4 roms too as long as they are not touchwiz. If its a touchwiz 4.4.2 rom you must have at least 4.3 firmware though.
Hi i want to know if i can flash an original 4.3 firmware my bootloader is I747MVLUFNE6 can i go back or i will brick my phone if i tried?
No you cannot downgrade firmware. You can only flash the same or newer builds. Or you can flash older roms and kernels, but nothing else.
I was on CM 10.2.1
I upgraded to CM11 - I get no wireless data. My phone works but I have no APNs and I could not add them.
I tried SlimKat 9.0 same issue with the APN
I upgraded my CWM to 6.4.0.7 as I heard that caused issues when upgrading to CM11.
I bought Mobile Odin and flashed that way as I thought it might help.
Ive done the following to fix my APN
1) Loaded an old one from working CM 10.2.1
2) Run Root Tweak with the fix APN for CM11 checked
3) Done the airplane mode trick
4) Attempt to add one manually
Does anyone know why this is happening and more importantly how to correct this issue?
Yes I did pore through other threads on how to fix this but no avail.
Thank you
What is your bootloader and modem? Do you get data if you re-install your previous ROM?
audit13 said:
What is your bootloader and modem? Do you get data if you re-install your previous ROM?
Click to expand...
Click to collapse
Bootloader = I747UCDLK3
Modem = I747UCDLK3
Yes I get data when I load a backup of CM 10.2.1
Thanks
Data does not work on ROMs beyond cm10.2 because your bootloader and modem to too old.
I recommend flashing back to stock 4.1.1, sim unlock your phone if it is not already sim unlocked, and run OTA updates to at least 4.3, then install recovery and CM11.
audit13 said:
Data does not work on ROMs beyond cm10.2 because your bootloader and modem to too old.
I recommend flashing back to stock 4.1.1, sim unlock your phone if it is not already sim unlocked, and run OTA updates to at least 4.3, then install recovery and CM11.
Click to expand...
Click to collapse
Thanks for the quick reply. That sounds hard. From what I'm reading going back is treacherous.
So these are the steps.
1. Load this firmware via ODIN -> I747UCDLK3_I747ATTDLK3_I747UCDLK3_HOME.zip -- What about gapps? Is that in this zip?
2. Run triangle away. (Do I need to do this?)
3. Contact my carrier to unlock my sim. (If this is carrier unlocking ie taking my att phone to Sprint etc, why is this needed?)
4. Get OTA updates. Will this come automagically because I'm on 4.1.1 and does it matter if my flash counter is gt 1?
5. Root phone via Odin with this file CF-Auto-Root-d2att-d2uc-samsungsghi747.tar.md5.
6. Install CWM if it went away when I went back to firmware - Of course it would because I'll factory reset my phone in step 1.
7. Flash away to a 4.4.4 Rom
Did I miss anything?
Step 4 is the one that scares me -- That one is out of my control. Either I get the OTA or I dont. Anyway I can "request" the OTA?
Thanks again
Be Well
From your custom ROM, run triangle away to reset counter and change things back to official.
Now flash back to stock 4.1.1 using Odin. If your phone does not boot, you need to get into recovery, do a factory reset, and reboot the phone and go through the set up routine.
After loading stock 4.1.1, do this to sim unlock your phone for free: http://forum.xda-developers.com/showthread.php?t=2529200. If you have a code from ATT, you must be running a stock ROM or a custom ROM that is based on a stock Samsung ROM in order to enter the unlock code.
You must be on a stock ROM in order to take OTA updates. OTA updates are the safest way to obtain an updated bootloader and modem.
After updating to 4.3, you cannot downgrade the bootloader as doing so may brick the phone.
The choice is yours in terms of what you want to do. As you found out, some ROMs will not function properly without an updated bootloader and modem. Mixing modem and bootloader versions may also result in a bricked phone.
audit13 said:
From your custom ROM, run triangle away to reset counter and change things back to official.
Now flash back to stock 4.1.1 using Odin. If your phone does not boot, you need to get into recovery, do a factory reset, and reboot the phone and go through the set up routine.
After loading stock 4.1.1, do this to sim unlock your phone for free: http://forum.xda-developers.com/showthread.php?t=2529200. If you have a code from ATT, you must be running a stock ROM or a custom ROM that is based on a stock Samsung ROM in order to enter the unlock code.
You must be on a stock ROM in order to take OTA updates. OTA updates are the safest way to obtain an updated bootloader and modem.
After updating to 4.3, you cannot downgrade the bootloader as doing so may brick the phone.
The choice is yours in terms of what you want to do. As you found out, some ROMs will not function properly without an updated bootloader and modem. Mixing modem and bootloader versions may also result in a bricked phone.
Click to expand...
Click to collapse
To stick with 10.2 or not to that is the question. Everytime I flash or do anything like this on my phone - I get a small lump in my throat knowing I'm dancing in the razors edge of bricking it.
I know how you feel, but I've done it enough times and just accept the fact that I may brick the phone. Jtag service would cost me around $75 so I'm willing to take the chance. I'd be less willing if the phone still has warranty.
Flashing back to stock and running OTA updates is the safest route.
If you don't sim unlock while on stock 4.1.1 and you want to sim unlock your phone in the future, you will need to be on a stock or virtually stock ROM in order to enter the unlock code.
Used ODIN to go back to stock 4.1.1.
Got the OTA update to 4.3
I have my MMS and cellular data back
I'll stick on stock, unrooted 4.3 for a minute.
I should be available to root and update to CM11 or SlimKat or any 4.4 rom whenever I so desire and still keep cellular data.
My baseband is I747UCUEMJB. How can I find out my bootloader and modem versions on UNROOTED device?
Your help is much appreciated and your instructions were flawless.
ddunleavy2 said:
Used ODIN to go back to stock 4.1.1.
Got the OTA update to 4.3
I have my MMS and cellular data back
I'll stick on stock, unrooted 4.3 for a minute.
I should be available to root and update to CM11 or SlimKat or any 4.4 rom whenever I so desire and still keep cellular data.
My baseband is I747UCUEMJB. How can I find out my bootloader and modem versions on UNROOTED device?
Your help is much appreciated and your instructions were flawless.
Click to expand...
Click to collapse
In a terminal or adb shell you can enter this to check your bootloader:
Code:
getprop ro.bootloader
In a terminal or adb shell you can enter this to check your modem (should match the baseband your phone reports in About):
Code:
getprop gsm.version.baseband
I don't believe either of these commands require root unless stock has getprop locked down tighter that AOSP ROMs; I just entered them in a user shell.
There are a couple of firmware updates for your device beyond MJB, NE4 and NJ1. Some users, myself included, had GPS problems that were a bit of a pain to fix on newer 4.4 AOSP based ROMs with the MJB firmware, but data was ok with MJB. Also, you'll need newer firmware if you decide to test drive the lollipop alphas that are floating around. There are custom recovery flashable firmware updates on XDA from a trusted developer if you decide you need that, or you might want to take a couple more OTAs if you're more comfortable going that route. You're already on MJB so there's no going back
The terminal worked
Bootloader and baseband = I747UCUEMJB
What???? I might need more updates for all the roms out there.....ugggh.
"There are custom recovery flashable firmware updates on XDA from a trusted developer if you decide you need that, or you might want to take a couple more OTAs if you're more comfortable going that route."
If I decide to use these flashable firmware updates on XDA from a trusted developer or OTA its same as this: going forward and NEVER going backward when getting firmware updates?, yes?
yes. downgrading bootloader will almost certainly cause a brick.
"all i can really do , is stay out of my own way and let the will of heaven be done"
---------- Post added at 10:09 PM ---------- Previous post was at 10:07 PM ----------
audit13 said:
Data does not work on ROMs beyond cm10.2 because your bootloader and modem to too old.
I recommend flashing back to stock 4.1.1, sim unlock your phone if it is not already sim unlocked, and run OTA updates to at least 4.3, then install recovery and CM11.
Click to expand...
Click to collapse
+1
"all i can really do , is stay out of my own way and let the will of heaven be done"
You guys are on point.
Last night I received another OTA to 4.4.2.
Baseband now at NE4.
Thanks again for taking the time to answer all this -- Really really appreciate it.
EDIT: Can I still use this to root my phone via ODIN or is there a different process for this baseband?
CF-Auto-Root-d2att-d2uc-samsungsghi747.tar.md5
I load this into ODIN, plug my phone in download mode and root away. Does either the file I use change or do I have to use something other than ODIN?
Thanks again
To get root, I would flash a custom recovery and flash supersu from recovery, then let supersu disable know.
The file you named looks to be outdated as it refers to the s3 as d2att. Since unified builds were released, the s3 is now referred to as the d2lte.
I have ROM Manager installed. It has an option to "Flash Clockworkmod Recovery". I just tried it and it failed and I think thats because I dont have root. In the past I've had to root my phone via ODIN, then flash custom recovery then MOD away.
In the past I rooted the S3 via ODIN. With this new 4.4.2 version do I still root via ODIN provide I find the correct file because -> CF-Auto-Root-d2att-d2uc-samsungsghi747.tar.md5 this one is probably for a 4.1.1 version phone?
I would not flash anything for the d2att at this point.
Try this:
Download the latest tar.md5 file from here: https://goo.im/devs/philz_touch/CWM_...Edition/d2lte/
Download supersu zip from here and place it onto an external SD card or copy it to the phone's internal storage: http://download.chainfire.eu/695/SuperSU/
In Odin, uncheck everything except f.reset time. Flash Philz. When you see reset in the status window, remove USB cable, pull battery, replace battery, boot into recovery, flash supersu, reboot.
I am fairly certain that AOSP, or at least CM, de-unified in the past few months. Not that it matters much, other than for the confusion it causes.
Hi all, I have an SGH-i747 with ver 4.0.4 which has been rooted. I will like to update my version systematically with the original updates i believe there where from 4.0.4 to 4.1.1 then 4.1.2. then 4.3, 4.4.2 etcc.. its there a place where i can find the original ups, my phone will not take the original firmware updates on its own. Reason is once i try to flash any ROM pass 4.1.1 i loose the Mobile Data getting the no sim inserted msg and no signal, forcing me to go back the original state in order to work. seems there is a problem with the modem once i go pass 4.1.1. .. thank you.
What bootloader version is on the phone? Where did you get the firmware to flash? You're using desktop Odin to flash?
Are ota updates an option for you? If they are you can unroot and flash the stock recovery; it might be easiest just to Odin back to stock.
Otherwise enewman has posted firmware updates to xda. They are bootloader + modem zips you can flash in custom recovery. You have to flash them incrementally, mjb then ne4 then nj1. Search the forum here and you'll find them. Just be careful and read read read those threads. Messing with bootloaders is the best way to hard brick this phone.
I'm in a similar situation - I've been on a custom version of the Stock ROM for 4.1.2 - never bothered to update the bootloader because I had the soft unlock done, didn't want to lose it. Now I'm bored with it. I'd love to get up to 4.4, or even a 5.0 ROM... but not sure the steps needed to do so. I'm vaguely aware that I have to update the bootloader/kernel, etc... but it seems like I'm 4 years behind the curve with all the ROMs and threads about bootloaders, and I've lost my touch.
That thread with the list of bootloaders sounds good though, I'll go looking for it to start I guess.
gfinockio said:
I'm in a similar situation - I've been on a custom version of the Stock ROM for 4.1.2 - never bothered to update the bootloader because I had the soft unlock done, didn't want to lose it. Now I'm bored with it. I'd love to get up to 4.4, or even a 5.0 ROM... but not sure the steps needed to do so. I'm vaguely aware that I have to update the bootloader/kernel, etc... but it seems like I'm 4 years behind the curve with all the ROMs and threads about bootloaders, and I've lost my touch.
That thread with the list of bootloaders sounds good though, I'll go looking for it to start I guess.
Click to expand...
Click to collapse
Here you go. This TLDR post has all enewman's firmware update threads linked to it.
jason2678 said:
Here you go. This TLDR post has all enewman's firmware update threads linked to it.
Click to expand...
Click to collapse
Thanks! I'll give it a look, down a couple of shots of liquid courage, and give it a go this weekend.
EDIT: Yikes, didn't take long for that to fizzle out. I'm using a i747M. Noticed that my current baseband version isn't listed anywhere on that thread. Hmmm. Oh well, guess I'll do some more digging later...
With an i747m, you can flash the latest 4.4.2 using firmware from sammobile.com and desktop Odin.
Do I need to do them in sequence, or can I jump to the latest? I'm assuming once I've flashed the stock firmware, I can load any current custom ROM?
@gfinockio, is your phone sim unlocked? If not and you don't see any mention of the warranty bit in download mode, you could flash back to stock 4.1.1, use the free method to sim unlock, and then run OTA updates until you are running the latest ROM. OTA updates are the safest route to upgrade the phone.
If you phone is sim unlocked already, you could flash directly to the latest ROM; however, you will not be able to downgrade the bootloader as any attempts to downgrade the bootloader could hard brick you phone.
audit13 said:
@gfinockio, is your phone sim unlocked? If not and you don't see any mention of the warranty bit in download mode, you could flash back to stock 4.1.1, use the free method to sim unlock, and then run OTA updates until you are running the latest ROM. OTA updates are the safest route to upgrade the phone.
If you phone is sim unlocked already, you could flash directly to the latest ROM; however, you will not be able to downgrade the bootloader as any attempts to downgrade the bootloader could hard brick you phone.
Click to expand...
Click to collapse
I used the "free unlock" in 4.1.2 (so it's unlocked) but I thought when you upgraded the bootloader you lost that lock. Now that I believe that isn't the case (and I've used a different tool to unlock as well), I may just try the OTA updates. I was with MTS (Manitoba), but now I'm with Rogers, so I guess I would just use the Rogers OTA images to upgrade from 4.1.2 to 4.4? Do I use Odin or whatever to do that? Once I upgrade to a "stock" image, won't the updater just prompt me to upgrade again and again until I'm "up to date"?
Unlocking the phone via code or the free method is permanent even after upgrading the ROM, bootloader, and modem.
The carrier ROMs for the i747m are pretty much identical but I always recommend sticking with the original carrier's ROM. If you download the stock image from sammobile.com, use Odin to flash the ROM.
OTA updates will not work with a rooted stock ROM too.
When i search for the stock firmware on sammobile for the i747m, it doesn't have any listings. Are you able to find it on there? I don't see it.
Search for the sgh-i747m.
komali2 said:
When i search for the stock firmware on sammobile for the i747m, it doesn't have any listings. Are you able to find it on there? I don't see it.
Click to expand...
Click to collapse
Check here: http://www.sammobile.com/firmwares/database/SGH-I747M/
you can sort by carrier or country.
delete
I have Pac Rom Android 5.1.1 installed on my rooted sg3 and I need to do a carrier unlock. I contacted ATT to get the unlock code and the code they provided didn't work. Now I want to downgrade to Android 4.1 and try the UMTS menu trick as described here http://forum.xda-developers.com/showthread.php?t=2176719
I have tried Odin many times (with many versions, different computers, USB cables, etc) and every time Odin fails to flash Android 4.1. with a Fail AUTH error. I have used Odin successfully in the past many times with this phone but am unable to get it to work this time around.
Does anyone know how to downgrade the sg3 from 5.1.1 to 4.1? Or even better does anyone how to carrier unlock the sg3 when it has 5.1.1 installed on it?
Thanks!
Odin is probably failing because you have a 4.3 or 4.4.2 bootloader on your phone. I recommend you not flash anymore ROMs using Odin as repeat attempts to flash the 4.1.1 ROM via Odin may hard brick the phone.
Once a phone is running and 4.3 or 4.4.2 bootloader, you cannot use the free/hidden menu method to unlock the phone.
You cannot use a custom ROM to enter an unlock code. You'll have to go back to a stock ROM, enter the code, and return to a custom ROM.
Thanks for the reply. Do you know how I can go back to stock 4.1.1 without using Odin?
You need the 4.1.1 bootloader in order to use the free method. Once a phone is on 4.3 bootloader or higher, you can't go back to 4.1.1. Don't try because attempts to do so could brick the phone.
A stock 4.1.1 rom on a 4.3 bootloader will not work.
So you're saying once the sg3 is on a version above 4.3 there is no way to go back to 4.1.1?
slipnslider said:
So you're saying once the sg3 is on a version above 4.3 there is no way to go back to 4.1.1?
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Click to collapse
Once it is on the 4.3 or higher bootloader, there is no going back to an older bootloader and it is the older 4.1.1 bootloader and stock 4.1.1 ROM that is required to unlock using the free method.
Since you have the code, you can flash a stock ROM from recovery.
audit13 said:
Once it is on the 4.3 or higher bootloader, there is no going back to an older bootloader and it is the older 4.1.1 bootloader and stock 4.1.1 ROM that is required to unlock using the free method.
Since you have the code, you can flash a stock ROM from recovery.
Click to expand...
Click to collapse
Thanks. What do you mean by free method?
Also you suggesting if I put the 4.1.1 stock rom .zip on my sg3 I can flash it via CWM just like I would the latest 5.1.1 Pac Rom release?
The free method is the method you linked in your original post. This is the only free method available and it requires a 4.1.1 bootloader that your phone doesn't have. Installing 4.1.1 via cwm is not going to help you unlock it.
Since you have the code, you can flash a stock ROM from recovery.
Click to expand...
Click to collapse
How would I do this? Do I just flash 4.1.1 from cwm?
Flashing 4.1.1 onto your phone will not allow you to enter the code.
Before flashing anything, you need to verify the bootloader that is running on your phone. Until you do that, I would not flash any bootloaders or modems. An incompatible modem/bootloader combination can also brick your phone.
Sorry, one last question.
You'll have to go back to a stock ROM, enter the code, and return to a custom ROM.
Click to expand...
Click to collapse
How can I go back to the stock rom?
You can flash a stock rom from the general thread using twrp or cwm.
Awesome, thanks again. I was worried about going that route since I'm on 5.1.1 but I'll give it a shot
slipnslider said:
Awesome, thanks again. I was worried about going that route since I'm on 5.1.1 but I'll give it a shot
Click to expand...
Click to collapse
When you pick a stock ROM, make sure you pick one with the same bootloader and modem that are currently on your device. You probably have either the NE4 or NJ1 bootloader and modem pair. You DO NOT have a 5.1.1 bootloader and modem, they do not exist for the SGS3. Check your versions from a Terminal Emulator app or check them with the Phone Info - Samsung - app from the PlayStore.
Both NE4 and NJ1 stock ROMs are available in the forum. enewman17 posted them form image dumps, they have been used successfully by many.
The Terminal Emulator commands are:
Code:
getprop ro.bootloader
getprop | grep version.baseband
Thanks, I did this and both the bootloader and modem ended with NJ1 so I downloaded UCUFNJ1_Rooted.zip from enewman17's thread using CWM 6.0.4. The flash was successful but now the phone is frozen at the AT&T logo when I turn it on.
Any thoughts as to why its stuck booting up?
slipnslider said:
Thanks, I did this and both the bootloader and modem ended with NJ1 so I downloaded UCUFNJ1_Rooted.zip from enewman17's thread using CWM 6.0.4. The flash was successful but now the phone is frozen at the AT&T logo when I turn it on.
Any thoughts as to why its stuck booting up?
Click to expand...
Click to collapse
More than once I have seen reports of this happening when going from a 5.x.x ROM back to 4.4.x. The most common solution has been to include formating the internal sdcard before flashing the stock ROM.
If I flash the sd card as well I will lose the UCUFNJ1_Rooted.zip file. So in that case should I use adb via CWM to flash it?
slipnslider said:
If I flash the sd card as well I will lose the UCUFNJ1_Rooted.zip file. So in that case should I use adb via CWM to flash it?
Click to expand...
Click to collapse
Put the zip file on the external sdcard and then flash it with your recovery.
I actually didn't have an external SD card. I wound up taking it to the ATT store that had an ATT repair shop inside it and they reset it back to stock 4.4 for me and now everything works great! After unlocking the carrier on the phone I did have to manually enter the t-mobile APN to get the data connection working but that was simple (the info is listed on t-mobile's site)
slipnslider said:
I actually didn't have an external SD card. I wound up taking it to the ATT store that had an ATT repair shop inside it and they reset it back to stock 4.4 for me and now everything works great! After unlocking the carrier on the phone I did have to manually enter the t-mobile APN to get the data connection working but that was simple (the info is listed on t-mobile's site)
Click to expand...
Click to collapse
Glad to see you are up and running. Also glad to hear the AT&T guys helped out.